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Elza [17]
2 years ago
5

Which is bigger a star or star system

Chemistry
2 answers:
UkoKoshka [18]2 years ago
4 0
The Star System as it is a collective of Planets and a Star.
ArbitrLikvidat [17]2 years ago
3 0

Answer:

sun

Explanation:

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What is the molarity of a solution that contains 87.75g of NaCI in 500.ml of solution
Brut [27]

Answer:

M = 3.0 mol/L.

Explanation:

  • We can calculate the molarity of a solution using the relation:

<em>M = (mass x 1000) / (molar mass x V)</em>

  • M is the molarity "number of moles of solute per 1.0 L of the solution.
  • mass is the mass of the solute (g) (m = 87.75 g of NaCl).
  • molar mass of NaCl = 58.44 g/mol.
  • V is the volume of the solution (ml) (V = 500.0 ml).

∴ M = (mass x 1000) / (molar mass x V) = (87.75 g x 1000) / (58.44 g/mol x 500.0 ml) = 3.0 mol/L.

6 0
3 years ago
Understanding the theory of plate tectonics can help people better understand Earth's movements. How can knowledge of plate tect
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The knowledge of plate tectonics help people living in areas prone to earthquakes and volcanic eruptions can help by knowing the chances of the earthquake or volcanic eruption
4 0
2 years ago
Which of the following fractions can be used in the conversion of 25 m3 to the unit cm3?
zaharov [31]

your answer would be C hope this helps

8 0
3 years ago
Which human activity would most likely decrease the amount of carbon in the atmosphere?
Allushta [10]
The removal of trees would most likely decrease the amount of carbon in the atmosphere.

Please note that it is useful to add the options provided with the question, in order to get a most accurate answer and have your question answered quicker.

Hope this helps!!
6 0
3 years ago
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Carbon-12 and carbon-13 are isotopes of carbon.
ohaa [14]

Answer:

Isotopes of an element share the same number of protons but have different numbers of neutrons. Let's use carbon as an example. There are three isotopes of carbon found in nature – carbon-12, carbon-13, and carbon-14. All three have six protons, but their neutron numbers - 6, 7, and 8, respectively - all differ.

Explanation:

4 0
3 years ago
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